And one quest is give two Clear Devil's Spar in IcebergTarget: 4F, Ice House-Lord Chamberlain

Condition: Needs to have Mysterious Ice*1, Mysterious Crystal*1

Process: You promise Lord Chamberlain to awaken his queen. So you collect the mysterious ice and the mysterious crystal and give them to Lord Chamberlain. Then a battle between you and a monster begins. You will get a reward after saving the queen.